Delia never thought her love of adventure and artifact hunting would lead her to discover such oddities as man-slaying monsters, magical swords, and elves on motorcycles. Oh, and there’s also the Ancient Spartan warrior who’s been stranded in the present—he’s offering to work as her bodyguard in exchange for English lessons. When another monster arrives, this time in Sedona, Arizona...

People swear they've seen doppelgangers all of the time. It's when more than a dozen decide they want you dead that you have to worry. Mackenzie Lawson knows because that's her predicament. Unless she can find a way to stop the curse that's driving them to kill, she's going to have a hard time explaining the massacre they're planning for her family reunion.

Bulays finds out that there really are shapeshifters from another universe eating frozen heads. With beautiful demon fighters from another dimension tracking them down to kill them. However, there are far more dangerous things than demons stalking in the Titan moonlight.
A series planetary romance.
Bulays and Ghaavn #17.